Stock material or miscellaneous articles – Composite – Of addition polymer from unsaturated monomers
Reexamination Certificate
2011-08-23
2011-08-23
Le, Hoa (Department: 1788)
Stock material or miscellaneous articles
Composite
Of addition polymer from unsaturated monomers
C428S523000, C428S515000, C524S451000, C524S515000, C525S095000, C525S323000
Reexamination Certificate
active
08003223
ABSTRACT:
The present invention is directed to a heat-sealable propylene-based polymer composition comprising a propylene polymer composition including a propylene polymer component and propylene/ethylene random copolymer component; an ethylene/α-olefin random copolymer; and a soft propylene polymer composition. The present invention also provides a heat-sealable film using the composition and a packaging bag comprising the film. The heat-sealable film of the present invention has high heat-seal strength, with little decrease in heat-seal strength even after heat treatment. The heat-sealable film also has excellent blocking resistance, rigidity and low-temperature impact resistance.
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Hoya Hiroshi
Inoue Norihide
Maruyama Kazuhide
Takeishi Ichiro
Foley & Lardner LLP
Le Hoa
Mitsui Chemicals Inc.
Patel Ronak
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